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Starting with AIX 6.1 TL08 and AIX 7.1
TL02 there’s a new AIX CPU tuning feature called “ Scaled Throughput ” mode. This is supported on POWER7 and POWER7+ processors
only ( do not try this on POWER6!). This
new mode has the ability to dispatch workload to more SMT threads per VP,
avoiding the need to unfold additional VPs. I’ve heard it described as being more
“POWER6 like”. I’m not suggesting that you use this feature. This post simply
discusses what this new mode can do. By default AIX (on POWER7) operates in “ Raw Throughput” mode.... [More]

This post introduces two new features that I came across recently and found rather interesting. The first relates to PowerVP (VCPU affinity) and the second to POWER8 (Flexible SMT). I’m particularly impressed by this new feature in PowerVP version 1.1.2 (SP1). You can view CPU and memory affinity information directly from the PowerVP GUI. From the PowerVP Installation and User Guide: “If you go to the View menu and select the Display CPU affinity information, the CPU utilization information will be replaced in... [More]